Anders Markland / TextLCD

Initial commit

Fork of TextLCD by Wim Huiskamp

TextLCD.h@21:4984088e349c, 2014-12-05 (annotated)

Committer:
anmar
Date:
Fri Dec 05 10:26:07 2014 +0000
Revision:
21:4984088e349c
Parent:
20:e0da005a777f 
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon 1:ac48b187213c 1 /* mbed TextLCD Library, for a 4-bit LCD based on HD44780
simon 6:e4cb7ddee0d3 2 * Copyright (c) 2007-2010, sford, http://mbed.org
wim 13:24506ba22480 3 * 2013, v01: WH, Added LCD types, fixed LCD address issues, added Cursor and UDCs
wim 15:b70ebfffb258 4 * 2013, v02: WH, Added I2C and SPI bus interfaces
wim 15:b70ebfffb258 5 * 2013, v03: WH, Added support for LCD40x4 which uses 2 controllers
wim 17:652ab113bc2e 6 * 2013, v04: WH, Added support for Display On/Off, improved 4bit bootprocess
wim 18:bd65dc10f27f 7 * 2013, v05: WH, Added support for 8x2B, added some UDCs
wim 19:c747b9e2e7b8 8 * 2013, v06: WH, Added support for devices that use internal DC/DC converters
wim 20:e0da005a777f 9 * 2013, v07: WH, Added support for backlight and include portdefinitions for LCD2004 Module from DFROBOT
simon 1:ac48b187213c 10 *
simon 1:ac48b187213c 11 * Permission is hereby granted, free of charge, to any person obtaining a copy
simon 1:ac48b187213c 12 * of this software and associated documentation files (the "Software"), to deal
simon 1:ac48b187213c 13 * in the Software without restriction, including without limitation the rights
simon 1:ac48b187213c 14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
simon 1:ac48b187213c 15 * copies of the Software, and to permit persons to whom the Software is
simon 1:ac48b187213c 16 * furnished to do so, subject to the following conditions:
simon 2:227356c7d12c 17 *
simon 1:ac48b187213c 18 * The above copyright notice and this permission notice shall be included in
simon 1:ac48b187213c 19 * all copies or substantial portions of the Software.
simon 2:227356c7d12c 20 *
simon 1:ac48b187213c 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
simon 1:ac48b187213c 22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
simon 1:ac48b187213c 23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
simon 1:ac48b187213c 24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
simon 1:ac48b187213c 25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
simon 1:ac48b187213c 26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
simon 1:ac48b187213c 27 * THE SOFTWARE.
simon 1:ac48b187213c 28 */
simon 1:ac48b187213c 29
simon 1:ac48b187213c 30 #ifndef MBED_TEXTLCD_H
simon 1:ac48b187213c 31 #define MBED_TEXTLCD_H
simon 1:ac48b187213c 32
simon 1:ac48b187213c 33 #include "mbed.h"
simon 2:227356c7d12c 34
wim 15:b70ebfffb258 35
simon 5:a53b3e2d6f1e 36 /** A TextLCD interface for driving 4-bit HD44780-based LCDs
simon 2:227356c7d12c 37 *
wim 16:c276b75e6585 38 * Currently supports 8x1, 8x2, 12x4, 16x1, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
wim 16:c276b75e6585 39 * Interface options include direct mbed pins, I2C portexpander (PCF8474) or SPI bus shiftregister (74595)
wim 19:c747b9e2e7b8 40 * Supports some controllers that provide internal DC/DC converters for VLCD or VLED.
simon 2:227356c7d12c 41 *
simon 2:227356c7d12c 42 * @code
simon 2:227356c7d12c 43 * #include "mbed.h"
simon 2:227356c7d12c 44 * #include "TextLCD.h"
simon 5:a53b3e2d6f1e 45 *
wim 16:c276b75e6585 46 * // I2C Communication
wim 16:c276b75e6585 47 * I2C i2c_lcd(p28,p27); // SDA, SCL
wim 16:c276b75e6585 48 *
wim 16:c276b75e6585 49 * // SPI Communication
wim 16:c276b75e6585 50 * SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK
wim 16:c276b75e6585 51 *
wim 20:e0da005a777f 52 * TextLCD lcd(p15, p16, p17, p18, p19, p20); // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=HD44780
wim 16:c276b75e6585 53 * //TextLCD lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, CS pin, LCD Type
wim 16:c276b75e6585 54 * //TextLCD lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type
wim 19:c747b9e2e7b8 55 * //TextLCD lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, Device Type
simon 5:a53b3e2d6f1e 56 *
simon 2:227356c7d12c 57 * int main() {
wim 16:c276b75e6585 58 * lcd.printf("Hello World!\n");
simon 2:227356c7d12c 59 * }
simon 2:227356c7d12c 60 * @endcode
simon 2:227356c7d12c 61 */
wim 8:03116f75b66e 62
wim 16:c276b75e6585 63 //Pin Defines for I2C PCF8574 and SPI 74595 Bus interfaces
wim 13:24506ba22480 64 //LCD and serial portexpanders should be wired accordingly
wim 20:e0da005a777f 65 //
wim 20:e0da005a777f 66 #if (1)
wim 20:e0da005a777f 67 //Definitions for hardware used by WH
wim 13:24506ba22480 68 //Note: LCD RW pin must be connected to GND
wim 15:b70ebfffb258 69 // E2 is used for LCD40x4 (second controller)
wim 13:24506ba22480 70 // BL may be used for future expansion to control backlight
wim 15:b70ebfffb258 71 #define D_LCD_PIN_D4 0
wim 15:b70ebfffb258 72 #define D_LCD_PIN_D5 1
wim 15:b70ebfffb258 73 #define D_LCD_PIN_D6 2
wim 15:b70ebfffb258 74 #define D_LCD_PIN_D7 3
wim 15:b70ebfffb258 75 #define D_LCD_PIN_RS 4
wim 15:b70ebfffb258 76 #define D_LCD_PIN_E 5
wim 15:b70ebfffb258 77 #define D_LCD_PIN_E2 6
wim 15:b70ebfffb258 78 #define D_LCD_PIN_BL 7
wim 13:24506ba22480 79
wim 20:e0da005a777f 80 #define D_LCD_PIN_RW D_LCD_PIN_E2
wim 20:e0da005a777f 81
wim 20:e0da005a777f 82 #else
wim 20:e0da005a777f 83
wim 20:e0da005a777f 84 //Definitions for LCD2004 Module from DFROBOT, See http://arduino-info.wikispaces.com/LCD-Blue-I2C
wim 20:e0da005a777f 85 //This hardware is different from earlier/different Arduino I2C LCD displays
wim 20:e0da005a777f 86 //Note: LCD RW pin must be kept LOW
wim 20:e0da005a777f 87 // E2 is not available on default Arduino hardware and does not support LCD40x4 (second controller)
wim 20:e0da005a777f 88 // BL is used to control backlight
wim 20:e0da005a777f 89 #define D_LCD_PIN_RS 0
wim 20:e0da005a777f 90 #define D_LCD_PIN_RW 1
wim 20:e0da005a777f 91 #define D_LCD_PIN_E 2
wim 20:e0da005a777f 92 #define D_LCD_PIN_BL 3
wim 20:e0da005a777f 93 #define D_LCD_PIN_D4 4
wim 20:e0da005a777f 94 #define D_LCD_PIN_D5 5
wim 20:e0da005a777f 95 #define D_LCD_PIN_D6 6
wim 20:e0da005a777f 96 #define D_LCD_PIN_D7 7
wim 20:e0da005a777f 97
wim 20:e0da005a777f 98 #define D_LCD_PIN_E2 D_LCD_PIN_RW
wim 20:e0da005a777f 99 #endif
wim 13:24506ba22480 100
wim 13:24506ba22480 101 //Bitpattern Defines for I2C PCF8574 and SPI 74595 Bus
wim 13:24506ba22480 102 //
wim 13:24506ba22480 103 #define D_LCD_D4 (1<<D_LCD_PIN_D4)
wim 13:24506ba22480 104 #define D_LCD_D5 (1<<D_LCD_PIN_D5)
wim 13:24506ba22480 105 #define D_LCD_D6 (1<<D_LCD_PIN_D6)
wim 13:24506ba22480 106 #define D_LCD_D7 (1<<D_LCD_PIN_D7)
wim 13:24506ba22480 107 #define D_LCD_RS (1<<D_LCD_PIN_RS)
wim 13:24506ba22480 108 #define D_LCD_E (1<<D_LCD_PIN_E)
wim 13:24506ba22480 109 #define D_LCD_E2 (1<<D_LCD_PIN_E2)
wim 13:24506ba22480 110 #define D_LCD_BL (1<<D_LCD_PIN_BL)
wim 20:e0da005a777f 111 //#define D_LCD_RW (1<<D_LCD_PIN_RW)
wim 20:e0da005a777f 112
wim 20:e0da005a777f 113
wim 20:e0da005a777f 114 #define D_LCD_BUS_MSK (D_LCD_D4 | D_LCD_D5 | D_LCD_D6 | D_LCD_D7)
wim 20:e0da005a777f 115 #define D_LCD_BUS_DEF 0x00
wim 13:24506ba22480 116
wim 13:24506ba22480 117
wim 13:24506ba22480 118 /** Some sample User Defined Chars 5x7 dots */
wim 11:9ec02df863a1 119 const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ
wim 11:9ec02df863a1 120 const char udc_0e[] = {0x00, 0x00, 0x0E, 0x13, 0x15, 0x19, 0x0E, 0x00}; //ø
wim 11:9ec02df863a1 121 const char udc_ao[] = {0x0E, 0x0A, 0x0E, 0x01, 0x0F, 0x11, 0x0F, 0x00}; //å
wim 11:9ec02df863a1 122 const char udc_AE[] = {0x0F, 0x14, 0x14, 0x1F, 0x14, 0x14, 0x17, 0x00}; //Æ
wim 11:9ec02df863a1 123 const char udc_0E[] = {0x0E, 0x13, 0x15, 0x15, 0x15, 0x19, 0x0E, 0x00}; //Ø
wim 18:bd65dc10f27f 124 const char udc_Ao[] = {0x0E, 0x0A, 0x0E, 0x11, 0x1F, 0x11, 0x11, 0x00}; //Å
wim 18:bd65dc10f27f 125 const char udc_PO[] = {0x04, 0x0A, 0x0A, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Open
wim 18:bd65dc10f27f 126 const char udc_PC[] = {0x1C, 0x10, 0x08, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Closed
wim 11:9ec02df863a1 127
wim 11:9ec02df863a1 128 const char udc_0[] = {0x18, 0x14, 0x12, 0x11, 0x12, 0x14, 0x18, 0x00}; // |>
wim 11:9ec02df863a1 129 const char udc_1[] = {0x03, 0x05, 0x09, 0x11, 0x09, 0x05, 0x03, 0x00}; // <|
wim 11:9ec02df863a1 130 const char udc_2[] = {0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00}; // |
wim 11:9ec02df863a1 131 const char udc_3[] = {0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00}; // ||
wim 11:9ec02df863a1 132 const char udc_4[] = {0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x00}; // |||
wim 11:9ec02df863a1 133 const char udc_5[] = {0x00, 0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x00, 0x00}; // =
wim 11:9ec02df863a1 134 const char udc_6[] = {0x15, 0x0a, 0x15, 0x0a, 0x15, 0x0a, 0x15, 0x00}; // checkerboard
wim 11:9ec02df863a1 135 const char udc_7[] = {0x10, 0x08, 0x04, 0x02, 0x01, 0x00, 0x10, 0x00}; // \
wim 11:9ec02df863a1 136
wim 13:24506ba22480 137 const char udc_degr[] = {0x06, 0x09, 0x09, 0x06, 0x00, 0x00, 0x00, 0x00}; // Degree symbol
wim 13:24506ba22480 138
wim 13:24506ba22480 139 const char udc_TM_T[] = {0x1F, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00}; // Trademark T
wim 13:24506ba22480 140 const char udc_TM_M[] = {0x11, 0x1B, 0x15, 0x11, 0x00, 0x00, 0x00, 0x00}; // Trademark M
wim 13:24506ba22480 141
wim 13:24506ba22480 142 //const char udc_Bat_Hi[] = {0x0E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Full
wim 13:24506ba22480 143 //const char udc_Bat_Ha[] = {0x0E, 0x11, 0x13, 0x17, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Half
wim 13:24506ba22480 144 //const char udc_Bat_Lo[] = {0x0E, 0x11, 0x11, 0x11, 0x11, 0x11, 0x1F, 0x00}; // Battery Low
wim 13:24506ba22480 145 const char udc_Bat_Hi[] = {0x0E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Full
wim 13:24506ba22480 146 const char udc_Bat_Ha[] = {0x0E, 0x11, 0x11, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Half
wim 13:24506ba22480 147 const char udc_Bat_Lo[] = {0x0E, 0x11, 0x11, 0x11, 0x11, 0x1F, 0x1F, 0x00}; // Battery Low
wim 18:bd65dc10f27f 148 const char udc_AC[] = {0x0A, 0x0A, 0x1F, 0x11, 0x0E, 0x04, 0x04, 0x00}; // AC Power
wim 13:24506ba22480 149
wim 18:bd65dc10f27f 150 //const char udc_smiley[] = {0x00, 0x0A, 0x00, 0x04, 0x11, 0x0E, 0x00, 0x00}; // Smiley
wim 18:bd65dc10f27f 151 //const char udc_droopy[] = {0x00, 0x0A, 0x00, 0x04, 0x00, 0x0E, 0x11, 0x00}; // Droopey
wim 18:bd65dc10f27f 152 //const char udc_note[] = {0x01, 0x03, 0x05, 0x09, 0x0B, 0x1B, 0x18, 0x00}; // Note
wim 18:bd65dc10f27f 153
wim 18:bd65dc10f27f 154 //const char udc_bar_1[] = {0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00}; // Bar 1
wim 18:bd65dc10f27f 155 //const char udc_bar_2[] = {0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00}; // Bar 11
wim 18:bd65dc10f27f 156 //const char udc_bar_3[] = {0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x00}; // Bar 111
wim 18:bd65dc10f27f 157 //const char udc_bar_4[] = {0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x00}; // Bar 1111
wim 18:bd65dc10f27f 158 //const char udc_bar_5[] = {0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Bar 11111
wim 13:24506ba22480 159
wim 11:9ec02df863a1 160
wim 11:9ec02df863a1 161 /** A TextLCD interface for driving 4-bit HD44780-based LCDs
wim 11:9ec02df863a1 162 *
wim 16:c276b75e6585 163 * Currently supports 8x1, 8x2, 12x2, 12x4, 16x1, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
wim 11:9ec02df863a1 164 *
wim 11:9ec02df863a1 165 */
simon 1:ac48b187213c 166 class TextLCD : public Stream {
simon 1:ac48b187213c 167 public:
simon 1:ac48b187213c 168
simon 2:227356c7d12c 169 /** LCD panel format */
simon 1:ac48b187213c 170 enum LCDType {
wim 8:03116f75b66e 171 LCD8x1, /**< 8x1 LCD panel */
wim 13:24506ba22480 172 LCD8x2, /**< 8x2 LCD panel */
wim 18:bd65dc10f27f 173 LCD8x2B, /**< 8x2 LCD panel (actually 16x1) */
wim 15:b70ebfffb258 174 LCD12x2, /**< 12x2 LCD panel */
wim 15:b70ebfffb258 175 LCD12x4, /**< 12x4 LCD panel */
wim 13:24506ba22480 176 LCD16x1, /**< 16x1 LCD panel (actually 8x2) */
wim 8:03116f75b66e 177 LCD16x2, /**< 16x2 LCD panel (default) */
wim 8:03116f75b66e 178 LCD16x2B, /**< 16x2 LCD panel alternate addressing */
wim 8:03116f75b66e 179 LCD16x4, /**< 16x4 LCD panel */
wim 8:03116f75b66e 180 LCD20x2, /**< 20x2 LCD panel */
wim 8:03116f75b66e 181 LCD20x4, /**< 20x4 LCD panel */
wim 9:0893d986e717 182 LCD24x2, /**< 24x2 LCD panel */
wim 10:dd9b3a696acd 183 LCD24x4, /**< 24x4 LCD panel, special mode KS0078 */
wim 15:b70ebfffb258 184 LCD40x2, /**< 40x2 LCD panel */
wim 15:b70ebfffb258 185 LCD40x4 /**< 40x4 LCD panel, Two controller version */
simon 1:ac48b187213c 186 };
simon 1:ac48b187213c 187
wim 19:c747b9e2e7b8 188 /** LCD Controller Device */
wim 19:c747b9e2e7b8 189 enum LCDCtrl {
wim 19:c747b9e2e7b8 190 HD44780, /**< HD44780 (default) */
wim 19:c747b9e2e7b8 191 WS0010, /**< WS0010 OLED Controller */
wim 20:e0da005a777f 192 ST7036 /**< ST7036 */
wim 19:c747b9e2e7b8 193 };
wim 19:c747b9e2e7b8 194
wim 19:c747b9e2e7b8 195
wim 10:dd9b3a696acd 196 /** LCD Cursor control */
wim 10:dd9b3a696acd 197 enum LCDCursor {
wim 17:652ab113bc2e 198 CurOff_BlkOff = 0x00, /**< Cursor Off, Blinking Char Off */
wim 17:652ab113bc2e 199 CurOn_BlkOff = 0x02, /**< Cursor On, Blinking Char Off */
wim 17:652ab113bc2e 200 CurOff_BlkOn = 0x01, /**< Cursor Off, Blinking Char On */
wim 17:652ab113bc2e 201 CurOn_BlkOn = 0x03 /**< Cursor On, Blinking Char On */
wim 17:652ab113bc2e 202 };
wim 17:652ab113bc2e 203
wim 17:652ab113bc2e 204
wim 17:652ab113bc2e 205 /** LCD Display control */
wim 17:652ab113bc2e 206 enum LCDMode {
wim 17:652ab113bc2e 207 DispOff = 0x00, /**< Display Off */
wim 17:652ab113bc2e 208 DispOn = 0x04 /**< Display On */
wim 10:dd9b3a696acd 209 };
wim 10:dd9b3a696acd 210
wim 20:e0da005a777f 211 /** LCD Backlight control */
wim 20:e0da005a777f 212 enum LCDBacklight {
wim 20:e0da005a777f 213 LightOff, /**< Backlight Off */
wim 20:e0da005a777f 214 LightOn /**< Backlight On */
wim 20:e0da005a777f 215 };
wim 10:dd9b3a696acd 216
wim 13:24506ba22480 217 /** Create a TextLCD interface using an SPI 74595 portexpander
wim 13:24506ba22480 218 *
wim 13:24506ba22480 219 * @param spi SPI Bus
wim 13:24506ba22480 220 * @param cs chip select pin (active low)
wim 13:24506ba22480 221 * @param type Sets the panel size/addressing mode (default = LCD16x2)
wim 19:c747b9e2e7b8 222 * @param ctrl LCD controller (default = HD44780)
wim 13:24506ba22480 223 */
anmar 21:4984088e349c 224 TextLCD(SPI *spi, PinName cs, PinName rs, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);
wim 13:24506ba22480 225
simon 2:227356c7d12c 226
simon 2:227356c7d12c 227 #if DOXYGEN_ONLY
simon 2:227356c7d12c 228 /** Write a character to the LCD
simon 2:227356c7d12c 229 *
simon 2:227356c7d12c 230 * @param c The character to write to the display
simon 2:227356c7d12c 231 */
simon 2:227356c7d12c 232 int putc(int c);
simon 2:227356c7d12c 233
simon 2:227356c7d12c 234 /** Write a formated string to the LCD
simon 2:227356c7d12c 235 *
simon 2:227356c7d12c 236 * @param format A printf-style format string, followed by the
simon 2:227356c7d12c 237 * variables to use in formating the string.
simon 2:227356c7d12c 238 */
simon 2:227356c7d12c 239 int printf(const char* format, ...);
simon 2:227356c7d12c 240 #endif
simon 2:227356c7d12c 241
simon 2:227356c7d12c 242 /** Locate to a screen column and row
simon 2:227356c7d12c 243 *
simon 2:227356c7d12c 244 * @param column The horizontal position from the left, indexed from 0
simon 2:227356c7d12c 245 * @param row The vertical position from the top, indexed from 0
simon 2:227356c7d12c 246 */
simon 1:ac48b187213c 247 void locate(int column, int row);
simon 2:227356c7d12c 248
wim 10:dd9b3a696acd 249
wim 10:dd9b3a696acd 250 /** Return the memoryaddress of screen column and row location
wim 10:dd9b3a696acd 251 *
wim 10:dd9b3a696acd 252 * @param column The horizontal position from the left, indexed from 0
wim 10:dd9b3a696acd 253 * @param row The vertical position from the top, indexed from 0
wim 10:dd9b3a696acd 254 * @param return The memoryaddress of screen column and row location
wim 10:dd9b3a696acd 255 */
wim 9:0893d986e717 256 int getAddress(int column, int row);
wim 10:dd9b3a696acd 257
wim 10:dd9b3a696acd 258
wim 10:dd9b3a696acd 259 /** Set the memoryaddress of screen column and row location
wim 10:dd9b3a696acd 260 *
wim 10:dd9b3a696acd 261 * @param column The horizontal position from the left, indexed from 0
wim 10:dd9b3a696acd 262 * @param row The vertical position from the top, indexed from 0
wim 10:dd9b3a696acd 263 */
wim 9:0893d986e717 264 void setAddress(int column, int row);
wim 9:0893d986e717 265
wim 10:dd9b3a696acd 266
simon 2:227356c7d12c 267 /** Clear the screen and locate to 0,0 */
simon 1:ac48b187213c 268 void cls();
simon 2:227356c7d12c 269
wim 10:dd9b3a696acd 270 /** Return the number of rows
wim 10:dd9b3a696acd 271 *
wim 10:dd9b3a696acd 272 * @param return The number of rows
wim 10:dd9b3a696acd 273 */
simon 1:ac48b187213c 274 int rows();
wim 10:dd9b3a696acd 275
wim 10:dd9b3a696acd 276 /** Return the number of columns
wim 10:dd9b3a696acd 277 *
wim 10:dd9b3a696acd 278 * @param return The number of columns
wim 10:dd9b3a696acd 279 */
wim 10:dd9b3a696acd 280 int columns();
simon 2:227356c7d12c 281
wim 11:9ec02df863a1 282 /** Set the Cursormode
wim 11:9ec02df863a1 283 *
wim 17:652ab113bc2e 284 * @param cursorMode The Cursor mode (CurOff_BlkOff, CurOn_BlkOff, CurOff_BlkOn, CurOn_BlkOn)
wim 11:9ec02df863a1 285 */
wim 17:652ab113bc2e 286 void setCursor(LCDCursor cursorMode);
wim 17:652ab113bc2e 287
wim 17:652ab113bc2e 288
wim 17:652ab113bc2e 289 /** Set the Displaymode
wim 17:652ab113bc2e 290 *
wim 17:652ab113bc2e 291 * @param displayMode The Display mode (DispOff, DispOn)
wim 17:652ab113bc2e 292 */
wim 17:652ab113bc2e 293 void setMode(TextLCD::LCDMode displayMode);
wim 11:9ec02df863a1 294
anmar 21:4984088e349c 295
wim 11:9ec02df863a1 296 /** Set User Defined Characters
wim 11:9ec02df863a1 297 *
wim 11:9ec02df863a1 298 * @param unsigned char c The Index of the UDC (0..7)
wim 12:6bf9d9957d31 299 * @param char *udc_data The bitpatterns for the UDC (8 bytes of 5 significant bits)
wim 11:9ec02df863a1 300 */
wim 11:9ec02df863a1 301 void setUDC(unsigned char c, char *udc_data);
wim 11:9ec02df863a1 302
wim 20:e0da005a777f 303
simon 1:ac48b187213c 304 protected:
wim 14:0c32b66b14b8 305 /* LCD Bus control */
wim 13:24506ba22480 306 enum _LCDBus {
wim 14:0c32b66b14b8 307 _PinBus, /*< Regular mbed pins */
wim 14:0c32b66b14b8 308 _I2CBus, /*< I2C PCF8574 Portexpander */
wim 15:b70ebfffb258 309 _SPIBus /*< SPI 74595 Shiftregister */
wim 13:24506ba22480 310 };
wim 13:24506ba22480 311
wim 15:b70ebfffb258 312 /* LCD controller select, mainly used for LCD40x4 */
wim 19:c747b9e2e7b8 313 enum _LCDCtrl_Idx {
wim 15:b70ebfffb258 314 _LCDCtrl_0, /*< Primary */
wim 15:b70ebfffb258 315 _LCDCtrl_1, /*< Secondary */
wim 15:b70ebfffb258 316 };
wim 15:b70ebfffb258 317
simon 1:ac48b187213c 318 // Stream implementation functions
simon 1:ac48b187213c 319 virtual int _putc(int value);
simon 1:ac48b187213c 320 virtual int _getc();
simon 1:ac48b187213c 321
wim 15:b70ebfffb258 322 //Low level methods for LCD controller
wim 13:24506ba22480 323 void _init();
wim 15:b70ebfffb258 324 void _initCtrl();
wim 13:24506ba22480 325 int _address(int column, int row);
wim 15:b70ebfffb258 326 void _setCursor(TextLCD::LCDCursor show);
wim 17:652ab113bc2e 327 void _setUDC(unsigned char c, char *udc_data);
wim 17:652ab113bc2e 328 void _setCursorAndDisplayMode(TextLCD::LCDMode displayMode, TextLCD::LCDCursor cursorType);
wim 13:24506ba22480 329
wim 15:b70ebfffb258 330 //Low level write operations to LCD controller
wim 17:652ab113bc2e 331 void _writeNibble(int value);
wim 15:b70ebfffb258 332 void _writeByte(int value);
wim 15:b70ebfffb258 333 void _writeCommand(int command);
wim 15:b70ebfffb258 334 void _writeData(int data);
wim 15:b70ebfffb258 335
wim 13:24506ba22480 336 //Low level writes to LCD Bus (serial or parallel)
wim 13:24506ba22480 337 void _setEnable(bool value);
wim 13:24506ba22480 338 void _setRS(bool value);
wim 20:e0da005a777f 339 void _setBL(bool value);
wim 13:24506ba22480 340 void _setData(int value);
wim 14:0c32b66b14b8 341 void _setCS(bool value);
wim 14:0c32b66b14b8 342
wim 13:24506ba22480 343 //Low level writes to LCD serial bus only
wim 13:24506ba22480 344 void _writeBus();
wim 13:24506ba22480 345
wim 13:24506ba22480 346
wim 13:24506ba22480 347 // Regular mbed pins bus
wim 20:e0da005a777f 348 DigitalOut _rs, _e, _bl, _e2;
simon 1:ac48b187213c 349 BusOut _d;
wim 13:24506ba22480 350
wim 13:24506ba22480 351 // I2C bus
wim 13:24506ba22480 352 I2C *_i2c;
wim 13:24506ba22480 353 unsigned char _slaveAddress;
wim 13:24506ba22480 354
wim 13:24506ba22480 355 // SPI bus
wim 14:0c32b66b14b8 356 SPI *_spi;
wim 14:0c32b66b14b8 357 DigitalOut _cs;
wim 13:24506ba22480 358
wim 13:24506ba22480 359 //Bus Interface type
wim 13:24506ba22480 360 _LCDBus _busType;
wim 13:24506ba22480 361
wim 15:b70ebfffb258 362 // Internal bus mirror value for serial bus only
wim 13:24506ba22480 363 char _lcd_bus;
wim 13:24506ba22480 364
wim 13:24506ba22480 365 //Display type
simon 1:ac48b187213c 366 LCDType _type;
simon 1:ac48b187213c 367
wim 17:652ab113bc2e 368 //Display type
wim 17:652ab113bc2e 369 LCDMode _currentMode;
wim 17:652ab113bc2e 370
wim 19:c747b9e2e7b8 371 //Controller type
wim 19:c747b9e2e7b8 372 LCDCtrl _ctrl;
wim 19:c747b9e2e7b8 373
wim 15:b70ebfffb258 374 //Controller select, mainly used for LCD40x4
wim 19:c747b9e2e7b8 375 _LCDCtrl_Idx _ctrl_idx;
wim 15:b70ebfffb258 376
wim 13:24506ba22480 377 // Cursor
simon 1:ac48b187213c 378 int _column;
simon 1:ac48b187213c 379 int _row;
wim 15:b70ebfffb258 380 LCDCursor _currentCursor;
simon 1:ac48b187213c 381 };
simon 1:ac48b187213c 382
simon 1:ac48b187213c 383 #endif